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| author | Nathan Huckleberry <nhuck@google.com> | 2019-08-20 17:16:49 +0000 |
|---|---|---|
| committer | Nathan Huckleberry <nhuck@google.com> | 2019-08-20 17:16:49 +0000 |
| commit | 1e0affb6e564b7361b0aadb38805f26deff4ecfc (patch) | |
| tree | 94ae1566bc130995b7c8b50631cdf4f2ff9e4001 /clang/test/Sema | |
| parent | 86d560ff1b7101506329331fc392a2d67323d298 (diff) | |
| download | bcm5719-llvm-1e0affb6e564b7361b0aadb38805f26deff4ecfc.tar.gz bcm5719-llvm-1e0affb6e564b7361b0aadb38805f26deff4ecfc.zip | |
[Attr] Support _attribute__ ((fallthrough))
Summary: Fixed extraneous matches of non-NullStmt
Reviewers: aaron.ballman, rsmith, efriedma, xbolva00
Reviewed By: aaron.ballman, rsmith, xbolva00
Subscribers: riccibruno, arphaman, ziangwan, ojeda, xbolva00, nickdesaulniers, cfe-commits
Tags: #clang
Differential Revision: https://reviews.llvm.org/D64838
llvm-svn: 369414
Diffstat (limited to 'clang/test/Sema')
| -rw-r--r-- | clang/test/Sema/fallthrough-attr.c | 24 |
1 files changed, 24 insertions, 0 deletions
diff --git a/clang/test/Sema/fallthrough-attr.c b/clang/test/Sema/fallthrough-attr.c new file mode 100644 index 00000000000..de50ebf39d4 --- /dev/null +++ b/clang/test/Sema/fallthrough-attr.c @@ -0,0 +1,24 @@ +// RUN: %clang_cc1 -fsyntax-only -std=gnu89 -verify -Wimplicit-fallthrough %s +// RUN: %clang_cc1 -fsyntax-only -std=gnu99 -verify -Wimplicit-fallthrough %s +// RUN: %clang_cc1 -fsyntax-only -std=c99 -verify -Wimplicit-fallthrough %s +// RUN: %clang_cc1 -fsyntax-only -std=c11 -verify -Wimplicit-fallthrough %s +// RUN: %clang_cc1 -fsyntax-only -std=c2x -DC2X -verify -Wimplicit-fallthrough %s + +int fallthrough_attribute_spelling(int n) { + switch (n) { + case 0: + n++; + case 1: +#if defined(C2X) +// expected-warning@-2{{unannotated fall-through between switch labels}} expected-note@-2{{insert '[[fallthrough]];' to silence this warning}} expected-note@-2{{insert 'break;' to avoid fall-through}} +#else +// expected-warning@-4{{unannotated fall-through between switch labels}} expected-note@-4{{insert '__attribute__((fallthrough));' to silence this warning}} expected-note@-4{{insert 'break;' to avoid fall-through}} +#endif + n++; + __attribute__((fallthrough)); + case 2: + n++; + break; + } + return n; +} |
